EMAN 2.05

Release Date



This version includes some significant bug fixes, and a few new features. It is a highly recommended upgrade for all users.

The EMAN2 binary and source downloads also include SPARX !

Please follow the installation instructions at:



Documentation is provided through the EMAN2 Wiki

  • Windows users - Please note that while we do our best to periodically test the windows release to make sure it's still functioning, it is far less well-tested than the linux/Mac releases. Please report any problems you encounter.
  • Mac users, we do not support 10.5 since there are a number of issues with OS provided dependencies not working as they should. The 10.7 version will also work on 10.8 (Mountain Lion).
  • Linux users
    • Linux x86 is for 32 bit Linux. Linux x86_64 is for 64 bit Linux. use command 'uname -i' to determine whether your Linux is 32 bit or 64 bit.
    • The GCC4 binaries provide a significant performance boost, but require glibc version at least 2.5. You can check your system's glibc version by using command '/sbin/ldconfig -V'.
    • Warning: The fftw cache is disabled for the non-GCC4 version due to a segfault on some image sizes. This makes it much slower than the GCC4 version. We strongly suggest using a Linux distribution new enough to support GCC4.
    • If you see the following error message when your run EMAN2 GUI program, please remove the Qt libraries (rm -rf libQt*.so) from your EMAN2/lib directory: "Cannot mix incompatible Qt library (version 0x407**) with this library. (version 0x40703)"
    • For Ubuntu user, when you run a GUI program like e2workflow.py, if you see error messages like "Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed", please install and run qtconfig-qt4, and set the GUI style to motif.

Version changes

  • Fixed the problem with the "unable to allocate Mutex" which could impact projects meeting certain criteria. If you still encounter this error, please report it.
  • New "gold standard" resolution test: e2refine_evenodd.py. Expensive, but not subject to noise-bias.
  • Drag/drop curves between 2-D plotting windows
  • Preview version of replacement for e2workflow.py: e2projectmanager.py. Not yet 100% but far less reliant on the database system.
  • New file browser and new 3-D display widget available through e2projectmanager.py (folder button)
  • Many minor bugfixes

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